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Compact Anonymous Hierarchical Identity-Based Encryption with Constant Size Private Keys (2016)

Zhang, L., Mu, Y., Wu, Q.

Oxford University Press

In: Computer Journal

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Publication Date: 2016-03-29

Description: We present a new construction of anonymous hierarchical identity-based encryption (HIBE) over prime order groups. The distinct feature of our proposed scheme is that both private key and ciphertext have a constant size, which has never been achieved in all other existing anonymous HIBE schemes. Moreover, we utilized a double exponent technique to generate the ciphertext in order to provide anonymity. This simple and efficient method allows us to construct a more compact anonymous HIBE in prime order groups. Under the decisional bilinear $n+1$ -Diffie–Hellman exponent assumption and linear assumption, we show that the proposed scheme is secure and anonymous against chosen plaintext attacks in the standard model.

Print ISSN: 0010-4620

Electronic ISSN: 1460-2067

Topics: Computer Science

Published by Oxford University Press

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